New ways have been found to prevent the river ______.A．not to be pollutedB．again
题型：不详难度：来源：
New ways have been found to prevent the river ______.| A．not to be polluted | B．against polluting | | C．from polluting | D．from being polluted |
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答案
| D |
解析
| 固定词组。Prevent sb (from) doing sth阻止某人做某事；句意：新的方法已经被发现来阻止河流被污染。 |
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